The children also recited Chinese poetry "San Zi Jing" - a Confucian classic text used to teach young children about moral principles - though three-year-old Joseph appeared shy towards the end and turned towards his father.
Peng Liyuan (1st L), wife of Chinese President Xi Jinping, and U.S. First Lady Melania Trump (2nd L), applaud to a performance by students during their visit to the Bak Middle School of the Arts in West Palm Beach, Florida, the United States, April 7, 2017.
The President's daughter, Ivanka Trump couldn't help but gush over her kids' cuteness and fell very proud as they showed potential in handling worldwide relations when they performed in front of the Chinese president on Friday evening.
Peng is in Palm Beach with Xi for the Chinese president's first meeting with his US counterpart, Donald Trump.
United States President Donald Trump's grandchildren serenaded Chinese President Xi Jinping and his wife Peng Liyuan with a traditional Chinese folk song and a recital of Chinese poetry during the presidents' first meeting.
Ivanka could be seen ushering her daughter out to meet the guests, while husband Jared Kushner held 34-year-old Joseph's hand.
The reports said Arabella has been learning Chinese since she was a small child, taught by a Chinese nanny.
The kids also recited Tang dynasty poems and verses from the Three-character classics according to the Chinese news agency Xinhua.
On Tuesday, the baby was pictured in front of a set of building blocks covered with numbers and characters in simplified Chinese.
"The relationship developed by President Xi and myself I think is outstanding".